| Level | Item |
| Ref No | L/E/5/75 |
| Alt Ref No | E(L)/5/75 |
| Title | Choreology (Effort) \ Why man dances |
| Date | n.d. |
| Extent | 13 sheets |
| Description | Handwritten manuscript by Rudolf Laban on investigation into principles underlying vectors: spending of energy; efficiency; rhythm; flow. |
| Language | English |
| Physical Description | Original reference number was 6/VI/50b. |
| Format | Papers |